Positive shuttle motion for looms



(No Model.) 2 Sheets-Sheet 1. J. MAW.

POSITIVE SHUTTLE MOTION FOR LOOMS. No. 377,207. Patented Jan. 81, 1888.

(No Model.) 2 SheetsSheet 2.

J. MAW.

POSITIVE SHUTTLE MOTION FOR LOOMS. No. 377,207. Patented Jan. 31, 1888.

Tiaras T NITE JOHN MAIV, OF DUNDAS, ONTARIO, CANADA.

POSITIVE SHUTTLE-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 377,207, dated January 31, 1888.

Application filed May 19, 1887.

To all whom, it may concern.-

Be it known that I, JOHN MAW, of Dundas, in the Province of Ontario and Dominion of Canada, have invented new and useful Improvements in Positive Shuttle-Motions for Looms, of which the following is a specifica tion.

Thisjinvention relates to that class of sh uttlemotions in which the shuttle is operated positively by two carrier-arms arranged on opposite sides of the loom and receiving and delivering the shuttle from one to the other within the warpshcd by an automaticlocking and unlocking mechanism.

The object of my invention is the production of a simple and effective mechanism by which the shuttle is automatically attached to and disconnected from the carrier-arms; also, to provide the shuttle with a simple tensionspring which is easily applied and removed.

My invention consists of the improvements which will be hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure l is a plan view of my improved shuttle and portions of the carrier-arms. Fig. 2 is a side elevation of the shuttle with one of the carrier-arms in section. Fig. 3 is a horizontal section of the same. Fig. at is a vertical sectional elevation in linezvx, Fig. 3. Fig. 5 is avertical section in line 3 y, Fig. 4. Fig. 6 is an elevation of the tension'spring detached from the bobbinpost and the bobbin-post. Fig. 7 is a perspective view of the bobbin-post.

Like letters of reference refer to like parts in the several figures.

A represents the frame of the shuttle, provided at one end with an elevated portion, a, which is grooved on its front side and closed by a front plate, (1,, whereby a narrow chamher, A, is formed at the front end of the shuttle. This chamber extends across the front of the shuttle and is open at both ends.

0 0 represent the horizontal carrier-arms, which alternately enter the chamber A from opposite sides and move simultaneously inwardly and outwardly in a well-known manner. Any suitable or well-known mechanism may be employed for imparting this motion to these armsfor instance, mechanism like that Serial No. 238,730. (No model.)

described and shown in Letters Patent No. 299,610, June 3, 1884.

D represents a duplex locking lever or hook, pivoted vertically in the chamber A of the shuttle by a horizontal bolt, (1, and adapted to engage alternately with the inner ends of the carrier-arms O O in such manner that when the lever becomes detached from one arm it engages with the other arm.

The lever D is provided with two arms, 0 e, projecting in opposite directions from its fulcrum, and provided, respectively, with hookshaped heads 6 6 which are adapted to engage in notches f f in the carrier-arms O O. The latter are provided with heads F F, which project forward beyond the notchesff, and which are adapted to engage alternately against opposite sides of a tail-piece or projection, Lg, formed on the locking lever D above the pivot thereof. The locking-lever is held in an inclined position by a spring, H, which is secured at one end to the bottom of the passage A, and provided at its free end with an inclined or bent portion, h,engaging against one or the other side of a double-inclined or V- shaped projection, I, formed on the lockinglever D below the pivot thereof.

In the position of the parts represented in Fig. 5 the arm 6 of the locking-lever is engaged in the notch f of the carrier-arm O, and the shuttle is thereby connected to the latter and follows its movement.

Assuming that the carrier-arms are moving toward each other, the head F of the carrierarm 0 will strike against the tail-piece g of the locking-lever, and thereby turn the latter in such a direction as to disengage the arm e from the notchf and swing the arm 0 toward the notch f of the arm 0. This turning movement of the lever D causes the double-inclined projection I to depress the free end of the spring H until the apex of the projection reaches the but sufiicient to cause the locking-lever D to be turned farther by the carrier until the apex of the projection 1- passes beyond the upper edge of the inclined end h of the spring H. When this occurs, the spring presses against the opposite inclined face of the projection l, whereby the lever D is further turned in the same direction, so as to engage its arm 0 with the notch f of the carrier 0. The shuttle is now attached to the carrier 0 and follows the movement of the latter. It will thus be seen that the lever D is unlocked from one carrierarm by the head of the opposite carrier-arm striking against the tail-piece of the lockinglever, and that the shuttle is locked to the opposite carrier-arm by the reversing-spring,

, which causes the locking-lever to complete its rocking movement.

J represents the upright hollow post upon which the hub of the bobbin j turns and which is secured to the shuttle-frame A.

K represents a curb or slotted guard which is secured with its'front ends to the raised portion a of the shuttle-frame and which incloses the bobbin. V

L represents the tension-spring which bears with its free ends against the upper side of the bobbin, and which is provided at its center with a pin, Z, which enters the bore of the hollow post, J. g

m is a projection formed on the side of the pin Z, and n nn is a groove formed in the post J for locking the pin Z in the post J by means of the projection m. The outer or upper portion, n, of the groove is formed lengthwise in the bore of the hollow post J, and opens at the upper end thereof, as clearly represented in Fig. 7. The portion n of the groove extends from the inner end of the groove n at right angles to the same, circumferentially of the post, and the portion 12 extends from the end of the portion a a short distance toward the upper end of the post. When the bobbin has been applied to'the post J, the pin Z is inserted into the bore of the post and the projection m is introduced into the portion a of the groove.

By compressing the spring L the pin 1 is forced into the boreof the post until the projection m reaches the inner end ofv the portion 01. of the groove. A turning movement of the spring L and pin Z now presses the projection m through the inner arc-shaped portion, n, of the groove until the projection m reaches the portion at of the groove, when the elasticityof the spring L causes the pin Z to move upwardly in the bore of the post J until the projection m reaches the upper end of the portion n of the groove, when the tension-spring is locked in position. By effecting these movements in the inverse order the tensionspring .is detached from the post. For facilitating the formation of the groove in the postJ, the inner portions, 71/12 ofthe groove may extend to the outer surface of the post, as indicated clearly in Figs. 6 and 7. The projection m does not extend to the surface of the post, so that it cannot interfere with the free movement of the bobbin on the post. i i

My improved devices, whereby the tensionspring is attached to theshuttle-frame and the bobbin is held in place, are extremely simple in construction, easily manipulated, and all concealed within the shuttle, so that there are no projecting parts which could interfere with. the wire or thread which is run off from the bobbin, nor are there any loose parts which are liable to be lost.

My improved shuttle-operating mechanism I is particularly desirable for looms which are used in the manufacture of wire-cloth. I claim as my invention 1. The combination, with the shuttle-frame,

of a duplex locking-lever pivoted to said frame substantially as set forth.

2. The combination,with the carrying-arms O 0, provided with locking-recesses f f and heads F F, of a shuttle provided with a duplex locking-lever, D, having heads 0 e atail-piece, g, and a projectioml, and a reversing-spring, H, bearing against the projection I, substan tially asset forth.

3. The combination, with the shuttleframe provided with a hollow post, J, of a bobbin mounted on said post, and a tension spring, L, provided with a pin, Z, which enters the bore of the hollow post, and means whereby the pin Zis locked within the same, substantially as set forth.

4:. The combination, with the shuttle-frame provided with a hollow post, J, having a locking-groove, n n n, of a bobbin mounted on said post, a tension-spring, L, and a pin, 1, secured to said spring and provided with a projection, m,whereby the pin is locked in the groove of the post, substantially as set forth.

Witness my hand this 7th day of May, 1887.

JOHN MAW.

Witnesses;

T. A. WARDELL, H. A. WARDELL.

ICC 

